[Spce-user] wrong registration with contact from an internal IP address

[Tóth Csaba]

Dear Marc,

thank you the quick and so informative answer!

The problem what we faced here is the Kamailio was not able to make an
invite for this subscriber, because it tried to connect with the
contact, what contained the internal IP address. We tried to trace it
with wireshark, and this is what we understanded. Maybe we were wrong
with this. :(
After we setted a static route to the real external IP address the calls
goes in well.

So it doesn't matter what is the stored contact? Why we not see it back
in the frontend what is the real IP/real contact? :/

Thanks,
Csaba



2015.02.10. 17:40 keltezéssel, Marc Storck írta:
> The contact is not wrong at all, the content of the content is not used to route the call on the IP level.  The contact field is used to construct the correct Request header for inbound calls.
> 
> Kamailio stores the public IP and public port of the user in the “received” field of the kamailio table.
> 
> Here is an example for my test user:
> 
> Contact:
> sip:MyTestUser at 192.168.178.22:59969;transport=tls;registering_acc=sld_tld
> 
> received:
> sip:203.0.113.244:59969;transport=tls
> 
> path:
> <sip:lb at 127.0.0.1;lr;received=sip:203.0.113.244:59969%3Btransport%3Dtls;socket=sip:100.64.177.34:5061>
> 
> Inbound calls to that user are sent to IP 203.0.113.244 port 59969 and the Request URI is constructed correctly using the stored contact.
> 
> Eventually you can tell us which problem you try to solve and the members on the mailing list can assist you on how to solve it.
> 
> Regards,
> 
> Marc
> 
> 
>> On 10 Feb 2015, at 17:20, Tóth Csaba <tsabi at tsabi.hu> wrote:
>>
>> Dear List, SipWise Team,
>>
>> how can i disabled registrations what try to register a contact into an
>> internal IP address range?
>>
>> For example this is a contact what a subscriber registered with:
>> "sip:361*******@10.102.2.1;transport=UDP;user=phone"
>>
>> How can i disable the possibility to these kind of registrations not be
>> able to register, or "maybe" (?) better the system do a replace on the
>> invalid IP address to the real external IP address it gots the
>> registration from? Our old call distribution system does this latter
>> mechanism, i am not so satisfied with it, i think the first method (a
>> decline on the registration) would be better.
>>
>> Thanks in advance!
>> Csaba Tóth
>> _______________________________________________
>> Spce-user mailing list
>> Spce-user at lists.sipwise.com
>> https://lists.sipwise.com/listinfo/spce-user
> 
> 
> 
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